xfx9800gt and m2r32-mvp compatablility

Im considering going sli with my 9800gt but my mobo is set up to go crossfire. my uncle works for amd and he said id have to download some drivers in order to go from crossfire to sli. is that true if so.. what drivers? thanks!
m2r32-mvp
phenom 7750 x2 2.97ghz
2g ram
xfx 9800gt 512mb
2x 160g raid/0